Date: Mon, 19 Sep 2005 13:14:16 -0700 From: George Hartzell <hartzell@kestrel.alerce.com> To: freebsd-questions@freebsd.org Cc: hartzell@alerce.com Subject: Re: hints for troubleshooting poor sound quality. Message-ID: <17199.7192.169898.491491@satchel.alerce.com> In-Reply-To: <44zmq9i1bo.fsf@be-well.ilk.org> References: <17196.47787.731732.312437@satchel.alerce.com> <44zmq9i1bo.fsf@be-well.ilk.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Lowell Gilbert writes: > George Hartzell <hartzell@kestrel.alerce.com> writes: > > I've set up an ASUS small form factor machine based around an P4S8L > > motherboard. It's running 6.0BETA4 and Gnome2.12 from the tinderbox > > packages. > > > > I'm kldload'ing snd_ich and (after getting a helpful pointer to the > > gnome FAQ) all of the sounds stuff is working. > > > > Here's my problem: > > > > The machine has two mini-jacks, one in the front and one in the > > back. If I plug a set of headphones into the front jack I hear all > > kinds of clicks and whirs and buzzing. They seem to correlate with > > drive activity, cd activity, and maybe even the cpu fan. The > > connector on the back seems quieter, but I still hear a bit of > > noise. > > > > I hear less noise on a set of sony powerer-subwoofer-and-tweeter > > speakers, but it's still noticable. > > > > I haven't been able to try another sound device, the only spare card > > that I have doesn't fit into the space provided (riser card). > > > > I'd appreciate anythoughts about dealing with the noise. Is this > > something electrical w/ the motherboard? Something about my Freebsd > > setup? > > Well, yes, it *is* electrical interference on the motherboard. You > may be able to reduce its impact, though. Reducing the amplifier gain > (ogain in the mixer(8) output) may help, for example. Also, does > playing digital audio see this effect, or only playing CDs? If the > latter, you can switch to digital extraction for playing CDs (most > software doesn't support it, but some does) and avoid the > interference. Thanks for the feedback. The noise seems to be there when nothing's happening, when I'm playing an mp3 from disk (that's what digital audio, right?), and when I'm directly playing a CD. Would a pci based sound card be immune from this? Any recommendations for one that's not as tall as a sound-blaster LIVE card (space constraints in the case...). Thanks, g.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?17199.7192.169898.491491>